1.1: Toggle field setValue() causes an exception

Using ST 1.1.

Trying to replace a checkbox on a floating form panel with a toggle. Replacing checkbox's check() and uncheck(), which worked perfectly, with toggle's setValue(1) and setValue(0), causes an exception shown below. The form panel with the toggle has not been displayed when the setValue() was called.

I've found an unofficial deploy of ST, say 1.2.0 beta, there it works good.
I guess that a final release of that version should be official in some days/weeks. Otherwise you could get a SVN-Access and download the latest.